{"product_id":"allen-bradley-1747-l542-slc-5-04-processor-module","title":"Allen-Bradley 1747-L542 SLC 5\/04 Processor Module","description":"\u003cdiv\u003e\u003cp\u003eThe Allen-Bradley 1747-L542 SLC 5\/04 Processor Module is a SLC 500 CPU designed for modular control in legacy automation systems. It provides 32K of memory for program and data storage and includes an RS-232 serial port for programming and diagnostics alongside a Data Highway Plus (DH+) communications port for networked communication with other SLC devices and I\/O modules. Built for use in standard 1747 backplane racks, this 5\/04 processor sits within the 1747-L541\/L542\/L543 family and supports the KS\/OS framework common to SLC 500 controllers. With its 32K memory, engineers can deploy mid-range control logic and data handling for discrete tasks, device coordination, and simple sequencing in compact rack installations. This module is well-suited for retrofits or new builds that rely on legacy Allen-Bradley networking and serial programming workflows, enabling reliable DH+ device networking and straightforward PC connections via RS-232. \u003c\/p\u003e\u003c\/div\u003e","brand":"Allen-Bradley","offers":[{"title":"Used Surplus - Excellent Condition","offer_id":51658957881646,"sku":null,"price":231.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0940\/0818\/1038\/files\/Ebay_website_image_be6680ef-e0d7-4b7e-900a-f92cd040db5e.jpg?v=1769525967","url":"https:\/\/plgautomation.com\/products\/allen-bradley-1747-l542-slc-5-04-processor-module","provider":"PLG Automation ","version":"1.0","type":"link"}